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Ant example source code file (ExtraFieldUtilsTest.java)

This example Ant source code file (ExtraFieldUtilsTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Ant tags/keywords

asiextrafield, asiextrafield, exception, exception, extrafieldutilstest, testcase, unixstat, unrecognizedextrafield, unrecognizedextrafield, zipextrafield, zipextrafield, zipshort

The ExtraFieldUtilsTest.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package org.apache.tools.zip;

import junit.framework.TestCase;

/**
 * JUnit 3 testcases for org.apache.tools.zip.ExtraFieldUtils.
 *
 */
public class ExtraFieldUtilsTest extends TestCase implements UnixStat {
    public ExtraFieldUtilsTest(String name) {
        super(name);
    }

    private AsiExtraField a;
    private UnrecognizedExtraField dummy;
    private byte[] data;
    private byte[] aLocal;

    public void setUp() {
        a = new AsiExtraField();
        a.setMode(0755);
        a.setDirectory(true);
        dummy = new UnrecognizedExtraField();
        dummy.setHeaderId(new ZipShort(1));
        dummy.setLocalFileDataData(new byte[0]);
        dummy.setCentralDirectoryData(new byte[] {0});

        aLocal = a.getLocalFileDataData();
        byte[] dummyLocal = dummy.getLocalFileDataData();
        data = new byte[4 + aLocal.length + 4 + dummyLocal.length];
        System.arraycopy(a.getHeaderId().getBytes(), 0, data, 0, 2);
        System.arraycopy(a.getLocalFileDataLength().getBytes(), 0, data, 2, 2);
        System.arraycopy(aLocal, 0, data, 4, aLocal.length);
        System.arraycopy(dummy.getHeaderId().getBytes(), 0, data,
                         4+aLocal.length, 2);
        System.arraycopy(dummy.getLocalFileDataLength().getBytes(), 0, data,
                         4+aLocal.length+2, 2);
        System.arraycopy(dummyLocal, 0, data,
                         4+aLocal.length+4, dummyLocal.length);

    }

    /**
     * test parser.
     */
    public void testParse() throws Exception {
        ZipExtraField[] ze = ExtraFieldUtils.parse(data);
        assertEquals("number of fields", 2, ze.length);
        assertTrue("type field 1", ze[0] instanceof AsiExtraField);
        assertEquals("mode field 1", 040755,
                     ((AsiExtraField) ze[0]).getMode());
        assertTrue("type field 2", ze[1] instanceof UnrecognizedExtraField);
        assertEquals("data length field 2", 0,
                     ze[1].getLocalFileDataLength().getValue());

        byte[] data2 = new byte[data.length-1];
        System.arraycopy(data, 0, data2, 0, data2.length);
        try {
            ExtraFieldUtils.parse(data2);
            fail("data should be invalid");
        } catch (Exception e) {
            assertEquals("message",
                         "data starting at "+(4+aLocal.length)+" is in unknown format",
                         e.getMessage());
        }
    }

    /**
     * Test merge methods
     */
    public void testMerge() {
        byte[] local =
            ExtraFieldUtils.mergeLocalFileDataData(new ZipExtraField[] {a, dummy});
        assertEquals("local length", data.length, local.length);
        for (int i=0; i<local.length; i++) {
            assertEquals("local byte "+i, data[i], local[i]);
        }

        byte[] dummyCentral = dummy.getCentralDirectoryData();
        byte[] data2 = new byte[4 + aLocal.length + 4 + dummyCentral.length];
        System.arraycopy(data, 0, data2, 0, 4 + aLocal.length + 2);
        System.arraycopy(dummy.getCentralDirectoryLength().getBytes(), 0,
                         data2, 4+aLocal.length+2, 2);
        System.arraycopy(dummyCentral, 0, data2,
                         4+aLocal.length+4, dummyCentral.length);


        byte[] central =
            ExtraFieldUtils.mergeCentralDirectoryData(new ZipExtraField[] {a, dummy});
        assertEquals("central length", data2.length, central.length);
        for (int i=0; i<central.length; i++) {
            assertEquals("central byte "+i, data2[i], central[i]);
        }

    }
}

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